49721523 has 4 divisors (see below), whose sum is σ = 66295368. Its totient is φ = 33147680.

The previous prime is 49721519. The next prime is 49721531. The reversal of 49721523 is 32512794.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49721523 - 2² = 49721519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49721563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8286918 + ... + 8286923.

It is an arithmetic number, because the mean of its divisors is an integer number (16573842).

Almost surely, 2^49721523 is an apocalyptic number.

49721523 is a deficient number, since it is larger than the sum of its proper divisors (16573845).

49721523 is a wasteful number, since it uses less digits than its factorization.

49721523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16573844.

The product of its digits is 15120, while the sum is 33.

The square root of 49721523 is about 7051.3490198685. The cubic root of 49721523 is about 367.7179308071.

The spelling of 49721523 in words is "forty-nine million, seven hundred twenty-one thousand, five hundred twenty-three".